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Revision 2531

Added by sgarg almost 19 years ago

Bugfixes to the previous commit and adding comments etc.

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src/upgrade-db-to-1.6-postgres.sql
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CREATE INDEX xml_path_index_idx3 ON xml_path_index (nodedatanumerical);
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/*


  		




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 * Table for storing the nodes for the old revisions of the document and the deleted documents


  		




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 */


  		




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CREATE INDEX xml_nodes_revisions_idx3 ON xml_nodes_revisions (nodename);


  		




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/**


  		




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 * Drop the constraint from xml_revisions which points to xml_nodes


  		




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 */


  		




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ALTER TABLE xml_revisions DROP CONSTRAINT xml_revisions_root_fk;


  		




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/**


  		




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 * Copy the nodes from xml_nodes to xml_nodes_revisions for old revisions


  		




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 * of the documents and deleted documents


  		




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 */


  		




  
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INSERT INTO xml_nodes_revisions (nodeid, nodeindex, nodetype, 


  		




  
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nodename, nodeprefix, nodedata, parentnodeid, rootnodeid, docid, 


  		




  
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date_created, date_updated, nodedatanumerical) SELECT n.nodeid, 


  		




  
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n.nodeindex, n.nodetype, n.nodename, n.nodeprefix, n.nodedata, 


  		




  
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n.parentnodeid, n.rootnodeid, n.docid, n.date_created, n.date_updated, 


  		




  
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n.nodedatanumerical FROM xml_nodes n LEFT JOIN xml_documents 


  		




  
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ON n.rootnodeid = xml_documents.rootnodeid WHERE 


  		




  
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xml_documents.rootnodeid IS NULL;


  		




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INSERT INTO xml_nodes_revisions (nodeid, nodeindex, nodetype, nodename, nodeprefix, nodedata, parentnodeid, rootnodeid, docid, date_created, date_updated, nodedatanumerical) SELECT n.nodeid, n.nodeindex, n.nodetype, n.nodename, n.nodeprefix, n.nodedata, n.parentnodeid, n.rootnodeid, n.docid, n.date_created, n.date_updated, n.nodedatanumerical FROM xml_nodes n LEFT JOIN xml_documents ON n.rootnodeid = xml_documents.rootnodeid WHERE xml_documents.rootnodeid IS NULL;


  		




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/**


  		




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 * Create the key constraint in xml_revisions which points to 


  		




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 * xml_nodes_revisions


  		




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 */


  		




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ALTER TABLE xml_revisions ADD CONSTRAINT xml_revisions_root_fk


  		




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 FOREIGN KEY (rootnodeid) REFERENCES xml_nodes_revisions(nodeid);


  		




  
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/**


  		




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 * Delete the records from xml_index table which point to old revisions in xml_index


  		




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 * This is possible for documents for which the indexing thread failed during UPDATE


  		




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DELETE FROM xml_index WHERE nodeid = xml_nodes_revisions.nodeid;


  		




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/**


  		




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 * Delete the records from xml_nodes which were transfered to xml_nodes_revisions 


  		




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 */


  		




  
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ALTER TABLE xml_nodes DROP CONSTRAINT xml_nodes_pk CASCADE;


  		




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// rename xml_nodes to xml_nodes_2


  		




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alter table xml_nodes rename to xml_nodes_2;


  		




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// Create a new xml_nodes table 


  		




  
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/** rename xml_nodes to xml_nodes_2 */


  		




  
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ALTER TABLE xml_nodes RENAME TO xml_nodes_2;


  		




  
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/** Create a new xml_nodes table */


  		




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CREATE TABLE xml_nodes (


  		




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        nodeid INT8 default nextval('xml_nodes_id_seq'),


  		




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                                        -- the unique node id (pk)


  		




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);


  		




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// copy data from xml_nodes_2 to xml_nodes


  		




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INSERT INTO xml_nodes (nodeid, nodeindex, nodetype, nodename, nodeprefix, nodedata, parentnodeid, rootnodeid, docid, date_created, date_updated, nodedatanumerical) select n.nodeid, n.nodeindex, n.nodetype, n.nodename, n.nodeprefix, n.nodedata, n.parentnodeid, n.rootnodeid, n.docid, n.date_created, n.date_updated, n.nodedatanumerical from xml_nodes n LEFT JOIN xml_nodes_revisions r ON n.rootnodeid = r.rootnodeid where r.rootnodeid is NULL;


  		




  
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/** copy data from xml_nodes_2 to xml_nodes */


  		




  
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INSERT INTO xml_nodes (nodeid, nodeindex, nodetype, nodename, 


  		




  
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nodeprefix, nodedata, parentnodeid, rootnodeid, docid, 


  		




  
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date_created, date_updated, nodedatanumerical) SELECT n.nodeid, 


  		




  
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n.nodeindex, n.nodetype, n.nodename, n.nodeprefix, n.nodedata, 


  		




  
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n.parentnodeid, n.rootnodeid, n.docid, n.date_created, 


  		




  
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n.date_updated, n.nodedatanumerical FROM xml_nodes_2 n 


  		




  
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LEFT JOIN xml_nodes_revisions r ON n.rootnodeid = r.rootnodeid 


  		




  
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WHERE r.rootnodeid is NULL;


  		




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// create indexes


  		




  
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/** Drop old indexes **/


  		




  
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DROP INDEX xml_nodes_idx1;


  		




  
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DROP INDEX xml_nodes_idx2;


  		




  
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DROP INDEX xml_nodes_idx3;


  		




  
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/** Create new indexes **/


  		




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CREATE INDEX xml_nodes_idx1 ON xml_nodes (rootnodeid);


  		




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CREATE INDEX xml_nodes_idx2 ON xml_nodes (parentnodeid);


  		




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CREATE INDEX xml_nodes_idx3 ON xml_nodes (nodename);


  		




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// add constaints which were deleted while moving xml_nodes to xml_nodes_2


  		




  
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/** Add constaints which were deleted before moving xml_nodes to xml_nodes_2 */


  		




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ALTER TABLE xml_documents ADD CONSTRAINT xml_documents_root_fk FOREIGN KEY (rootnodeid) REFERENCES xml_nodes;


  		




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ALTER TABLE xml_index ADD CONSTRAINT xml_index_nodeid_fk FOREIGN KEY (nodeid) REFERENCES xml_nodes;


  		




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/** Drop xml_nodes_2 table */


  		




  
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DROP TABLE xml_nodes_2;


  		




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/** done */


  		












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